SHARP SP1971 Technical Report

Date: Jan. 22, 1996

COPIER : SF-2116

1. METHOD TO PREVENT ABNORMAL NOISE FROM OCCURRING BETWEEN THE BASE
PLATE AND THE 2ND BASE PLATE.

2. MEASURE TO IMPROVE THE DETECTION PERFORMANCE OF THE PAPER DETECTION
SENSOR.

3. MEASURE TO PREVENT ABRASIVE NOISE FROM THE TONER TRANSPORT PIPE.

4. MEASURE TO PREVENT THE ATTACHMENT SCREWS OF THE LOCK LEVER FROM
LOOSENING.

1. Method to prevent abnormal noise from occurring between the base plate and the
2nd base plate.

1.Model name: SF-2118/ 1018/CM15

2.General: Abnormal noise sometimes occurs when the points

of contact between the base plate and the 2nd base
plate (indicated in the figure shown at right by the
arrows) are not perfectly fastened down. This
condition does not present any particular problems
to normal running operations of the machine, but as
an improvement measure, the following changes
have been carried out.

No. : SP-1971

2 locations

3.Description: An L-plate has been added by spot welding it to the base adjusting plate. In addition, a
washer has been added when tightening the screws.

Washer (LX-WZ0023FCZZ)

L Plate

4.Action: From 1995 October production.

SHARP CORPORATION Reprography Division

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Green

C

2. Measure to improve the detection performance of the paper detection sensor.

1.Model name: SF-2118/ 1018/CM15

2.General: The IC used in the motor control PWB has been changed as an improvement measure

for the detection performance of the paper detection sensor in the 2nd base plate unit.

3.Action: Running change from 1995 mid-August production.

3. Measure to prevent abrasive noise from the toner transport pipe.

1.Model name: SF-2116/ 2118/1016/1018

2.General: The abrasive noise which occurs from the toner transport pipe and the waste toner

transport spring has not presented any problems after changes were carried out in the
transport spring, etc., but the material used in the transport pipe has been changed as
an additional improvement for better performance.

Waste toner pipe cover
The color has been
changed from
cream to gray.

Taper side

Waste toner transport pipe
The color has been changed
from white to black.

3.Action: ∗ Japanese production: From the start of 1995 October production.
French (SMF) production: From the start of 1995 November production.

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